Which barcode format should I choose?

Code 128 handles letters and numbers, so it suits internal IDs and asset tags. EAN-13 and UPC are numeric retail product codes, and the QR payload suits URLs or longer text.

Why is my EAN-13 barcode not rendering?

EAN-13 expects a numeric product code of the correct length with a valid check digit. If your value does not fit the format, correct the digits or switch to Code 128.

Is the barcode value sent to a server?

No. Barcode generation runs entirely in your browser and nothing is uploaded.

How many digits do EAN-13 and UPC-A need?

EAN-13 has 13 digits and UPC-A has 12, and in both the last digit is a check digit calculated from the others. Numbers for retail products are assigned through GS1, so do not invent them for goods you sell through retailers.

Barcode generator: Code 128, EAN-13 and UPC

A barcode encodes a value such as a product number or asset ID as bars and spaces that a scanner can read.

Create Code 128, EAN-13, UPC or QR code labels, check the value fits the format, and download a PNG or SVG to print. Free and made in your browser.

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Last reviewed 30 Oct 2026

Your inputs are saved as a draft in this browser only. Nothing is uploaded.

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Result

Shelf A / Batch 2026

Barcode value: SKU-1001
Barcode generation remains local to this browser.

How to use it

Pick a barcode format: Code 128, EAN-13, UPC, or a QR code payload.
Enter the barcode value and an optional label note such as a shelf or batch reference.
Confirm the value fits the chosen format — EAN-13 and UPC accept only numeric product codes of the right length.
Check the preview, then download the image or SVG, or print the label.

Questions

Which barcode format should I choose?: Code 128 handles letters and numbers, so it suits internal IDs and asset tags. EAN-13 and UPC are numeric retail product codes, and the QR payload suits URLs or longer text.
Why is my EAN-13 barcode not rendering?: EAN-13 expects a numeric product code of the correct length with a valid check digit. If your value does not fit the format, correct the digits or switch to Code 128.
Is the barcode value sent to a server?: No. Barcode generation runs entirely in your browser and nothing is uploaded.
How many digits do EAN-13 and UPC-A need?: EAN-13 has 13 digits and UPC-A has 12, and in both the last digit is a check digit calculated from the others. Numbers for retail products are assigned through GS1, so do not invent them for goods you sell through retailers.